Garry M I, van Steenis R E, Summers J J
School of Psychology, University of Tasmania, Private Bag 30, Hobart, TAS 7001, Australia.
Hum Mov Sci. 2005 Oct-Dec;24(5-6):849-64. doi: 10.1016/j.humov.2005.10.005. Epub 2005 Dec 15.
Studies investigating whether simultaneous bilateral movements can facilitate performance of the impaired limb(s) of stroke patients have returned mixed results. In the present study we compared unilateral limb performance (amplitude, cycle duration) with performance during an interlimb coordination task involving both homologous (both arms, both legs) and non-homologous (one arm, one leg) limbs in stroke participants (n=7) and healthy age-matched controls (n=7). In addition, the effect of on-line augmented visual feedback on interlimb coordination was investigated. Participants performed cyclical flexion-extension movements of the arms and legs in the sagittal plane paced by an auditory metronome (1 Hz). Movement amplitudes were larger and cycle durations shorter during homologous limb coordination than non-homologous coordination. Compared with unilateral movements both groups had reduced movement amplitudes and the stroke group increased cycle duration when interlimb coordination tasks were performed. These effects were most evident during non-homologous (arm and leg) coordination. No evidence of facilitation of the impaired limb(s) was found in any of the interlimb coordination conditions. Augmented visual feedback had minimal effect on the movements of control participants but lead to an increase of cycle duration for stroke participants.
关于研究同时进行双侧运动是否能促进中风患者患侧肢体运动表现的研究结果不一。在本研究中，我们比较了中风参与者（n = 7）和年龄匹配的健康对照组（n = 7）在单侧肢体运动（幅度、周期时长）与涉及同源肢体（双臂、双腿）和非同源肢体（一侧手臂、一侧腿）的肢体间协调任务中的运动表现。此外，还研究了在线增强视觉反馈对肢体间协调的影响。参与者在1赫兹节拍器的节奏下，于矢状面进行手臂和腿部的周期性屈伸运动。与非同源肢体协调相比，同源肢体协调时运动幅度更大，周期时长更短。与单侧运动相比，当进行肢体间协调任务时，两组的运动幅度均减小，中风组的周期时长增加。这些影响在非同源（手臂和腿部）协调时最为明显。在任何肢体间协调条件下，均未发现促进患侧肢体运动的证据。增强视觉反馈对对照组参与者的运动影响极小，但导致中风参与者的周期时长增加。
